- removed function get_extra_fields and its usage (unnecessary + perf issue when retrieving many image ids in a section)
- 2 fixes recent feed.php commit
* month names were decalated by one
* strptime function is not implemented under Windows in php
- added somme missing $ROOT_URL in templates
git-svn-id: http://piwigo.org/svn/branches/2.1@6669 68402e56-0260-453c-a942-63ccdbb3a9ee